CN106162773A - Cell reselecting method - Google Patents
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Abstract
The invention discloses a kind of cell reselecting method, be used in a communicator of a communication system, include and receive a device that a network-side of described communication system broadcasted to device communication information and one first sequence information；And when described communicator is under an operational scenario, according to described device, device communication information is listed one second sequence information again.
Description
Technical field
The present invention relates to a kind of cell reselecting method, particularly to a kind of corresponding intrument to device communication
Support situation, and adjust the method that community reselects the priority of program.
Background technology
In cellular wireless communication system, communicator is to be carried out with another communicator by a base station
Communication, say, that base station can be as the relay entity between communicator.But, such communication
Mode is inefficent in area coverage, resource use and transmission delay, particularly in each communication
Device is close to each other and in the case of can communicating with each other.Therefore, industry proposes device to device
(Device-to-Device, D2D) communicates, and can directly carry out with the other side between i.e. two neighboring communication devices
Communication (as transmitted/receive package), turns biography package without by base station, to improve base station whereby
Area coverage, resource use and/or transmission delay.
According to third generation partner program (3rd Generation Partnership Project, 3GPP) mark
The 9.1.2 joint of quasi-TS 36.843, device can use the first mode that network-side is leading to device communication
The second pattern (mode 2) that (mode 1) or client are dominated carries out resource distribution (resource
allocation).In the flrst mode, as two communicators (in coverage) within the coverage of base station
And device to be carried out is when communicating to device, required resource can be distributed to the two communicator by base station.
But, the area coverage of first mode is limited, it is impossible to apply the communicator coverage in base station it
The situation of (out-of-coverage) outward.Under the second mode, when two communicator devices to be carried out are to dress
When putting communication, specific resources can be selected from resource pool (resource pool) to carry out data transmission, because of
This, the second pattern can be applicable to communicator and or covering edge outside the coverage of base station
(edge-of-coverage) situation, and the communicator entering idle mode (idle mode) is main
Use the second pattern.
But, at existing device under device communication structure, whether communicator cannot learn network-side
Assisting system to device communication, even cannot learn that device is communicated by network-side whether assisting system first
Pattern or the second pattern.Further, the community of TS 36.331 reselects preferentially
(CellReselectionPriority) sizes values of parameter and network-side whether assisting system to device communication,
First mode or the second pattern are unrelated, and therefore respective cell reselects priority parameter is the highest preferential neighbour
Nearly community or frequency not necessarily assisting system are to device communication.When communicator according to network-side broadcast little
District reselects priority parameter and carries out after community reselects, and communicator may reselect to not propping up
The adjacent cell that device is communicated by shaking apparatus, and interrupt original the most at the device carried out to device communication.?
Under this situation, how to improve the mode that community reselects, it has also become the target that industry is made great efforts.
Summary of the invention
Therefore, present invention generally provides a kind of cell reselecting method, with corresponding intrument to device communication
Support situation, and adjust community and reselect the priority of program.
The open a kind of cell reselecting method of the present invention, is used in a communicator of a communication system, bag
Include the device broadcasted of a network-side receiving described communication system to device (Device-to-Device,
D2D) communication information and one first sequence information；And when described communicator is under an operational scenario,
According to described device, device communication information is listed one second sequence information again.
Invention additionally discloses a kind of cell reselecting method, be used in a network-side of a communication system, bag
Include broadcast one device to device (Device-to-Device, D2D) communication information and one first sequence money
News；Wherein, when a communicator of described communication system is under an operational scenario, and described communicator depends on
According to described device, device communication information is listed one second sequence information again.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention one communication system.
Fig. 2 is the schematic diagram of the embodiment of the present invention one device.
Fig. 3 and Fig. 4 is the flow chart of the embodiment of the present invention one flow process.
Fig. 5 and Fig. 6 is the flow chart of another embodiment of the present invention one flow process.
Wherein, description of reference numerals is as follows:
10 communication systems
UE1, UE2 communicator
ND network-side
RAN1, RAN2 communication network
100,110,120,130 base station
100c, 110c, 120c, 130c Serving cell
CN core network
20 devices
200 processing meanss
210 memory element
214 procedure codes
220 communications interface units
30,40 flow process
300～322,400～422 steps
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention one communication system 10.Communication system 10 is one cellular
Wireless communication system, it can be briefly by represented by network-side ND and communicator UE1, UE2.
Wherein, network-side ND can include communication network RAN1, RAN2, communication network RAN1, RAN2
Including base station (base station) 100,110,120,130 respectively, base station 100～130 can divide
Other Serving cell 100c, 110c, 120c, 130c, but be not limited, a base station also visible system sets
Count and service multiple community.In one embodiment, communication network RAN1, RAN2 can be universal mobile
General land in telecommunication system (Universal Mobile Telecommunications System, UMTS)
Ground radio access network (Universal Terrestrial Radio Access Network, UTRAN), and
Base station 100～130 is base station (Node-B, NB) accordingly.In another embodiment, communication network
RAN1, RAN2 can be a Long Term Evolution (Long Term Evolution, LTE) system, an advanced person
In the advanced version of Long Term Evolution (LTE-Advanced, LTE-A) system or advanced long evolving system
Evolved universal terrestrial radio access network (evolved UTRAN, E-UTRAN), and base
Stand 100～130 accordingly for evolved base station (evolved-NB, eNB).In another embodiment,
Communication network RAN1, RAN2 can be to meet the wireless communication standard such as IEEE 802.11, IEEE 802.16
Cordless communication network.
Further, network-side ND also can include communication network RAN1, RAN2 and a core simultaneously
Heart network C N, wherein core network CN includes just like mobile management entity (Mobility Management
Entity, MME), servo gateway gateway (Serving Gateway, S-GW), packet data network (Packet
Data Network, PDN) channel, self assembly network (Self-Organizing Networks, SON)
The networks such as server and/or radio network controller (Radio Network Controller, RNC) are real
Body.In other words, after network-side ND receives the information transmitted by a communicator, described money
News are only capable of by communication network RAN1, RAN2 process, and the decision of corresponding described information is also
It is by performed by communication network RAN1, RAN2.On the other hand, communication network RAN1, RAN2 can
Turn and pass described information to core network CN, and process after described information at core network CN, corresponding
The decision of described information can be performed by core network CN.Additionally, described information can be simultaneously by communication network
Network RAN1, RAN2 and core network CN process, and communication network RAN1, RAN2 and core
Heart network C N can coordinated with each other and/or cooperation, to perform to be relevant to the decision of described information.Communication dress
Putting UE1, UE2 can be a client (User Equipment, UE), a machine kenel communication (Machine
Type Communication, MTC) device, a mobile phone, a notebook, a flat board
Computer, an e-book or a portable computer system.Additionally, according to data transfer direction, network-side
ND and communicator UE1, UE2 can be respectively seen as transmission end or receiving terminal, for example, for one
For uplink (uplink, UL), communicator UE1, UE2 are transmission end and network-side ND is
Receiving terminal, for link once (downlink, DL), network-side ND is that transmission end communicates
Device UE1, UE2 are receiving terminal.
Fig. 2 is the schematic diagram of the embodiment of the present invention one device 20.Device 20 can be for the communication shown in Fig. 1
Device UE1, UE2 or the device of network-side ND, but it is not limited to this.Device 20 can include a process dress
Put 200, one memory element 210 and a communications interface unit 220.Processing means 200 can be a micro-process
Device (microprocessor) or an ASIC (Application Specific Integrated
Circuit, ASIC).Memory element 210 can be that any data stores device, is used for storing a procedure code
214, processing means 200 can be read and program code 214 by memory element 210.For example,
Memory element 210 include but not limited to user identify film block (Subscriber Identity Module, SIM),
Read only memory (Read-Only Memory, ROM), flash memory (Flash Memory), with
Machine access memorizer (Random-Access Memory, RAM), compact disc read-only memory (CD-ROM
/ DVD-ROM), tape (Magnetic Tape), hard disk (Hard Disk) and optical storage of data
Device (Optical Data Storage Device) etc..Communications interface unit 220 can be a wireless transceiver,
It can be used for transmitting and receive signal (such as information or package etc.) according to the result of processing means 200.
Fig. 3 and Fig. 4 is the flow chart of the embodiment of the present invention one flow process 30.Flow process 30 can be with in FIG
Communicator UE1, reselect carrying out community.Flow process 30 can be compiled into procedure code 214, its
Comprise the following steps:
Step 300: start.
Step 302: the device that communicator UE1 reception network-side ND is broadcasted is to device
(Device-to-Device, D2D) communication information and one first sequence information.Its
In, device is relevant to multiple adjacent cells of network-side ND to device communication information
Or whether multiple frequency support a device to device communication.
Step 304: when communicator UE1 is under an operational scenario, communicator UE1 is according to device
Device communication information is listed one second sequence information again.Wherein, Duo Gelin
Adjacent cell that in nearly community or multiple frequency, device communicate by assisting system or frequently
Rate sorted before the adjacent cell that device is communicated by not assisting system or frequency.
Step 306: according to the second sequence information, the row of picking out in multiple adjacent cells or multiple frequency
Sequence is at least one more preferential candidate adjacent cell or at least one time corresponding to frequency
Selected frequency community, and judge at least one candidate adjacent cell or at least one Candidate Frequency
Community and the ordering relation of Serving cell 100c.
Step 308: when judging at least one candidate adjacent cell or at least one time according to the second sequence information
When the sequence of selected frequency community is same as the sequence of Serving cell 100c, perform one
First community reselects criterion (cell reselection criteria).
Step 310: according to one first result of calculation of Serving cell and at least one candidate adjacent cell or extremely
At least one second result of calculation of a few Candidate Frequency community carries out a R criterion (R
Criteria) sequence.
Step 312: according to R criterion sort, communicator UE1 select at least one candidate adjacent cell or
Sort at least one Candidate Frequency community a prepreerence community.
Step 314: when at least one candidate adjacent cell or at least one candidate frequency according to the second sequence information
When the sequence of rate community is different from the sequence of Serving cell 100c, perform one second
Community reselects criterion.
Step 316: when the sequence of at least one candidate adjacent cell or at least one Candidate Frequency community has precedence over
During the sequence of Serving cell 100c, and ought at least one candidate adjacent cell or at least
At least one first measurement of one Candidate Frequency community is in a time interval
TreselectionRATIn a both greater than first reference value time, communicator UE1 selects
Selecting property is according at least one second result of calculation, at least one candidate adjacent cell or extremely
A community is selected in a few Candidate Frequency community.
Step 318: when the sequence of at least one candidate adjacent cell or at least one Candidate Frequency community lags behind
During the sequence of described Serving cell 100c, and as the one second of Serving cell 100c
Measurement is in time interval TreselectionRATIn both less than one second reference value
Time, and ought at least one candidate adjacent cell or the first of at least one Candidate Frequency community
Measurement is in time interval TreselectionRATIn both greater than one the 3rd reference value
Time, communicator UE1 selectivity is according at least one second result of calculation, at least
A community is selected in one candidate adjacent cell or at least one Candidate Frequency community.
Step 320: carry out community and reselect to the community selected.
Step 322: terminate.
Specifically, according to step 302, communicator UE1 resides in a Serving cell (such as community
100c), and the system information broadcasted by Serving cell 100c, and community 110c～130c can be received
Adjacent cell for Serving cell 100c.Wherein, system information includes a device and communicates device information
And one first sequence information, it can pass through one the 3rd type system information block (System Information
Block Type 3, SIB3), the 5th type system information block (SIB5), the 6th type system information block
(SIB6), the 7th type system information block (SIB7), the 8th type system information block (SIB8) or
Radio resource controls Connection Release process (radio resources control (RRC) connection
Release) transmit.First sequence information is used to indicate multiple adjacent cells or multiple of network-side ND
Frequency reselects the priority of program in community, and it includes multiple first community and reselects preferentially
(CellReselectionPriority) parameter.Each first community reselects priority parameter according to the third generation
Partner program (3rd Generation Partnership Project, 3GPP) standard TS 36.331 is
One integer value between 0 to 7, wherein, 7 correspond to the highest priority picks.Wherein, Duo Gelin
Nearly community is to represent the community (such as community 110c) with Serving cell 100c same frequency, and multiple frequencies are tables
Show the frequency (frequency as corresponding in community 120c) different from Serving cell 100c or wireless for cross-system
The frequency of access technique (inter Radio Access Technology, inter-RAT) is (such as community 130c
Corresponding frequency).Additionally, device is relevant to multiple adjacent cells of network-side ND to device communication information
Whether (such as community 110c) or multiple frequency (frequency as corresponding in community 120c, 130c) support a dress
Put device communication.For example, the content that system information is possible listed by table one, and it can include definitely
Wireless channel is numbered (Absolute Radio Frequency Channel Number, ARFCN) and is
Information that device is communicated by no assisting system (i.e. device device is communicated information).Wherein, one is the most wireless
Channel number is corresponding to a specific uplink frequency and a specific lower link frequency, and, corresponding with service is little
The absolute wireless channel numbering of district 100c, system information also includes cell ID (Cell ID), example
As, the cell ID of the adjacent cell 110c identical with Serving cell 100c frequency can be 1 to 4 its
Middle one.
Table one
Stated differently, since communicator UE1 can receive the device that network-side ND broadcasted, device is led to
Letter information, therefore communicator UE1 can learn that device is led to by multiple adjacent cell or multiple frequency by device
The support situation of letter.
Afterwards, according to step 304, when communicator UE1 is under an operational scenario, communicator UE1
According to device, the receive first sequence information can be adjusted to the second sequence money by device communication information
News.Wherein, operational scenario is that communicator UE1 carries out a device pair at idle mode (idle mode)
Device signal procedure；Or, operational scenario is that communicator UE1 is intended to carry out a device pair at idle mode
Device signal procedure；Or, operational scenario is that communicator UE1 is intended to carry out a device and communicates device journey
Sequence and transmit a device to device communication instruction (ProSe interest indication) to network-side ND, but
Network-side ND is without responding, and makes communicator UE1 leave a link pattern (connected mode).
Further, the second sequence information also includes multiple second community and reselects priority parameter, and the highest preferentially
The numerical value that cis-position correspondence is maximum.In the second sequence information, multiple adjacent cells or multiple frequency are supported
Adjacent cell that device is communicated by device or frequency sort the adjacent cell communicated device at not assisting system
Or before frequency, i.e. assisting system has the second bigger community to adjacent cell or the frequency of device communication
Reselect priority parameter.For example, refer to table one and table two, wherein, table one and table two are respectively
Listing before and after resequencing according to step 304, the first community reselects priority parameter and second little
District reselects the situation of priority parameter corresponding definitely wireless channel numbering.As shown in Table 1, in step 304
Before rearrangement, the first community reselects the most corresponding different absolute wireless channel of priority parameter and compiles
Number and be different integer values, and as shown in Table 2, after step 304 is resequenced, the second community weight
The newly selected priority parameter then number and whether assisting system is to device by the most corresponding different absolute wireless channel
Communication information and adjust the first community and reselect the numerical value of priority parameter.Such as, absolute wireless channel
Though the respective frequencies of numbering 1650 has the first more preferential community to reselect priority parameter (integer value 6),
But due to it, assisting system is not to device communication, and therefore its second community reselects priority parameter to heel row
Sequence is to integer value 3.Though additionally, the community that cell ID is 1 to 4 has identical absolute wireless frequency
Road numbering 1600, but because assisting system has the second different communities to the situation difference of device communication
Reselect priority parameter, say, that though the frequency of adjacent cell 110c and Serving cell 100c
Identical, both reselect the priority of program and but may differ in community.
Table two
Stated differently, since device communication information can be listed the according to device by communicator UE1 again
Two sequence information so that in multiple adjacent cell or multiple frequency assisting system device is communicated neighbouring little
District or frequency sorted before the adjacent cell that device is communicated by not assisting system or frequency, and therefore communicate dress
Put UE1 according to multiple adjacent cells or multiple frequency, the support situation of device communication to be carried out by device
Community reselects, and the adjacent cell that device is communicated by relative priority selection assisting system or frequency.
Then, within step 306, according to the second sequence information, in multiple adjacent cells or multiple frequency
In pick out and be ordered as more preferential at least one candidate adjacent cell (such as community 110c) or frequency is corresponding
At least one Candidate Frequency community (such as community 120c or 130c), and judge at least one candidate adjacent cell or
At least one Candidate Frequency community and the ordering relation of Serving cell 100c.Wherein, according to Fig. 3, step 306
Middle elder generation selected out be cell ID be the community of 2,3.
In step 308, when judging that at least one candidate adjacent cell is (as little according to the second sequence information
District's identification code is the community of 2,3) or the sequence of at least one Candidate Frequency community be same as Serving cell 100c
Sequence time, perform one first community reselect criterion.First community reselects criterion and is similar to the 3rd
For the content of partner program standard TS 36.304 5.2.4.6 joint, including in steps 310,312.
In the step 310, according to Serving cell order standard (the cell-ranking criterion of Serving cell 100c
Rs) value and at least one candidate adjacent cell or the adjacent cell order standard of at least one Candidate Frequency community
(cell-ranking criterion Rn) value carries out a R criterion sequence, and, in step 312, depend on
Sorting according to R criterion, communicator UE1 selects at least one candidate adjacent cell or at least one Candidate Frequency little
District sorts a prepreerence community, and carry out community and reselect.Wherein, R criterion sequence refer to by
Serving cell ranking criteria value and adjacent cell ranking criteria value are ranked up, i.e. at least one candidate is neighbouring
The measuring value of community or at least one Candidate Frequency community must after skew just with the measuring value ratio of Serving cell 100c
Relatively.
In a step 314, when judging at least one candidate adjacent cell or at least according to the second sequence information
When the sequence of one Candidate Frequency community is different from the sequence of Serving cell 100c, perform one second community again
Selection criterion.Second community reselects criterion and can be similar to third generation partner program standard TS
The content of 36.304 5.2.4.5 joints, including in steps 316,318.In step 316, when extremely
The sequence of a few candidate adjacent cell or at least one Candidate Frequency community has precedence over the sequence of Serving cell 100c
Time, and ought the first measurement of at least one candidate adjacent cell or at least one Candidate Frequency community for the moment
Between be spaced TreselectionRATIn both greater than first reference value time, corresponding communication system kind and selectivity depends on
According to the ranking results of adjacent cell ranking criteria value, communicator UE1 selects at least one candidate adjacent cell
Or at least one sort in Candidate Frequency community a prepreerence community, and carry out community and reselect.In step
In rapid 318, when the sequence of at least one candidate adjacent cell or at least one Candidate Frequency community lags behind service
During the sequence of community 100c, and when second measurement of Serving cell 100c is in time interval
TreselectionRATIn both less than the second reference value time, and ought wait at least one candidate adjacent cell or at least
First measurement of selected frequency community is in time interval TreselectionRATIn both greater than the 3rd benchmark
During value, corresponding communication system kind and selectivity are according to the ranking results of adjacent cell ranking criteria value, logical
Sort in T unit UE1 selection at least one candidate adjacent cell or at least one Candidate Frequency community prepreerence
One community, and carry out community and reselect.Wherein, according to communication system kind, the first measurement and
Second measurement can be that the community of instruction received signal quality reselects quality (Cell selection
Quality, Squal) value or instruction received signal strength community again receive level (Cell selection
Receive level, Srxlev) value, first reference value can correspond to ThreshX,HighQValue or ThreshX,HighP
Value, the second reference value corresponds to ThreshServing,LowQValue, the 3rd reference value can correspond to ThreshX,LowQ
Value or ThreshX,LowPValue.Additionally, when only a candidate adjacent cell or a Candidate Frequency community, or
When the first measurement only having a community at least one candidate adjacent cell or at least one Candidate Frequency community
In time interval TreselectionRATIn both greater than first reference value or three reference values time, communicator
UE1 directly selects this community to carry out community and reselects, and need not enter by corresponding adjacent cell ranking criteria value
Row sequence.
In other words, according to device, device communication information is again listed second row as communicator UE1
After sequence information, even if adjacent cell is identical with the frequency of Serving cell 100c, the sequence of the second sequence information
Situation but may be different.In the case, it is only necessary to the most identical and perform the of step 308 according to sequence
One community reselects the second community of criterion or step 314 and reselects criterion, and need not additionally consider
Frequency is the most consistent with the frequency of Serving cell 100c.
The communication system 10 of Fig. 1, the flow process 30 of device 20 or Fig. 3 of Fig. 2 are embodiments of the invention,
Those skilled in the art are when doing different modifications according to this, and are not limited to this.For example, for further
Improving the efficiency that community reselects, refer to Fig. 5 and Fig. 6, Fig. 5 and Fig. 6 is another reality of the present invention
Execute the flow chart of example one flow process 40.Flow process 40 can be little to carry out with communicator UE1 in FIG
District reselects.Flow process 40 can be compiled into procedure code 214, and it comprises the following steps:
Step 400: start.
Step 402: device communication is provided by the device that communicator UE1 reception network-side ND is broadcasted
News and one first sequence information.Wherein, device is relevant to net to device communication information
Whether device is led to by assisting system for multiple adjacent cells of network end ND or multiple frequency
The first mode (mode 1) of letter or the second pattern (mode 2).
Step 404: when communicator UE1 is under an operational scenario, communicator UE1 is according to device
Device communication information is listed one second sequence information again, wherein, according to propping up
Help first mode and the second pattern, only support the second pattern, only support first mode,
The situation of device communication is not resequenced by assisting system.
Step 406: according to the second sequence information, the row of picking out in multiple adjacent cells or multiple frequency
Sequence is at least one more preferential candidate adjacent cell or at least one time corresponding to frequency
Selected frequency community, and judge at least one candidate adjacent cell or at least one Candidate Frequency
Community and the ordering relation of Serving cell 100c.
Step 408: when judging at least one candidate adjacent cell or at least according to the second sequence information
When the sequence of Candidate Frequency community is same as the sequence of Serving cell 100c, perform
One first community reselects criterion (cell reselection criteria).
Step 410: according to one first result of calculation of Serving cell and at least one candidate adjacent cell or
At least one second result of calculation of at least one Candidate Frequency community carries out a R criterion
(R criteria) sorts.
Step 412: sorting according to R criterion, communicator UE1 selects at least one candidate adjacent cell
Or at least one sort in Candidate Frequency community a prepreerence community.
Step 414: as at least one candidate adjacent cell or at least one candidate according to the second sequence information
When the sequence of frequency cells is different from the sequence of Serving cell 100c, perform one the
Two communities reselect criterion.
Step 416: when the sequence of at least one candidate adjacent cell or at least one Candidate Frequency community is preferential
When the sequence of Serving cell 100c, and ought at least one candidate adjacent cell or extremely
At least one first measurement of a few Candidate Frequency community is in a time interval
TreselectionRATIn a both greater than first reference value time, communicator UE1 selects
Selecting property is according at least one second result of calculation, at least one candidate adjacent cell or extremely
A community is selected in a few Candidate Frequency community.
Step 418: when the sequence of at least one candidate adjacent cell or at least one Candidate Frequency community falls behind
When the sequence of described Serving cell 100c, and as the one the of Serving cell 100c
Two measurements are in time interval TreselectionRATIn both less than one second benchmark
During value, and ought at least one candidate adjacent cell or the of at least one Candidate Frequency community
One measurement is in time interval TreselectionRATIn both greater than one the 3rd benchmark
During value, communicator UE1 selectivity is according at least one second result of calculation, extremely
A community is selected in a few candidate adjacent cell or at least one Candidate Frequency community.
Step 420: carry out community and reselect to the community selected.
Step 422: terminate.
From the foregoing, the structure of flow process 40 is substantially similar to flow process 30, both are difference,
According to step 402, the communicator UE1 residing in Serving cell 100c receives Serving cell 100c institute
Device is communicated information by the first sequence information of broadcast and device, and wherein, device communication information is entered by device
One step is relevant to multiple adjacent cells (such as community 110c) of network-side ND or multiple frequency (such as community
The frequency that 120c, 130c are corresponding) first mode that whether device is communicated by assisting system or the second pattern.
Consequently, it is possible to communicator UE1 can learn that device is led to by multiple adjacent cell or multiple frequency for device
The support situation of letter.
Furthermore, according to step 404, under communicator UE1 is in operational scenario, communicator UE1 meeting
Device is communicated information according to device, and the receive first sequence information is adjusted to the second sequence information.
The second pattern is mainly used owing to entering the communicator of idle mode, therefore, in one embodiment, many
Individual adjacent cell or multiple frequency are supported first mode and the adjacent cell of the second pattern or frequency sequence exists
Before only supporting adjacent cell or the frequency of first mode, multiple adjacent cells or multiple frequency are only supported
The adjacent cell of the second pattern or frequency sorted before the adjacent cell only supporting first mode or frequency,
And multiple adjacent cells or multiple frequency are only supported the adjacent cell of first mode or frequency sequence is not being propped up
Before adjacent cell that device is communicated by shaking apparatus or frequency.For example, refer to table three and table four,
Wherein, table three and table four are listed before and after resequencing according to step 404 respectively, and the first community is again
Priority parameter and the second community is selected to reselect the situation of priority parameter corresponding definitely wireless channel numbering.
As shown in table three and table four, device is communicated by corresponding different absolute wireless channel numbering and assisting system
Situation, the first sequence information is rearranged for the second sequence information.Such as, absolute wireless channel numbering 1650
First community of respective frequencies reselects priority parameter (table three) though more preferential (integer value 6), but
Due to it, assisting system is not to device communication, and therefore its second community reselects priority parameter (table four)
Sort backward to integer value 2.Further, according to the second sequence information, (the i.e. second community reselects preferentially
Parameter is bigger integer value 5), the most only cell ID be 2 community can first be chosen
Elect, and then carry out step 408～412.
Table three
Table four
But, the present invention is not limited.In another embodiment, multiple adjacent cells or multiple frequency
Middle support first mode and the adjacent cell of the second pattern or frequency sort in only supporting the neighbouring of the second pattern
Before community or frequency, multiple adjacent cells or multiple frequency are only supported the second pattern adjacent cell or
Frequency sorted before the adjacent cell only supporting first mode or frequency, and multiple adjacent cell or multiple
Frequency only supports the adjacent cell of first mode or frequency sorts the neighbour communicated device at not assisting system
Before nearly community or frequency.For example, refer to table three and table five, wherein, table three and table five are respectively
Listing before and after resequencing according to step 404, the first community reselects priority parameter and second little
District reselects the situation of priority parameter corresponding definitely wireless channel numbering.As shown in table three and table five, right
The situation that device is communicated by absolute wireless channel numbering that should be different and assisting system, the first sequence information weight
Newly it is arranged as the second sequence information.Such as, the first community of absolute wireless channel numbering 1650 respective frequencies
Reselect priority parameter (table three) though more preferential (integer value 6), but due to its not assisting system pair
Device communicates, and therefore its second community reselects priority parameter (table five) and sorts backward to integer value 3.
Further, according to the second sequence information, the most only cell ID is the first quilt of community meeting of 2
Pick out (it is bigger integer value 7 that the i.e. second community reselects priority parameter), and then carry out
Step 414,416.
Table five
Stated differently, since communicator UE1 can be according to supporting first mode and the second pattern, only supporting
Second pattern, only support first mode, not assisting system the situation of device communication is listed second again
Sequence information, therefore communicator UE1 can according to multiple adjacent cells or multiple frequency for device to dress
The support situation putting communication reselects to carry out community, and relative priority selects assisting system to lead to device
The adjacent cell of letter or frequency.
It should be noted that the mode that the first sequence information is rearranged for the second sequence information is not limited to
5th, 7, the rearrangement step 504 of 8 figures, 704,804, and visual different system demand and design
Consider and suitably adjust.For example, in rearrangement step 504, in 704,804, Serving cell
First community of 100c reselects priority parameter and to reselect priority parameter identical in the second community, but
In another embodiment, it is possible to the maximum that the second community first reselects priority parameter is adjusted to integer value
5, then the second community of sequential Serving cell 100c, other adjacent cells or other frequencies reselects
Priority parameter.Additionally, in another embodiment, adjacent cell that device is not communicated by assisting system or frequency
Second community of rate reselects priority parameter can all be set as zero.
From the foregoing, the spirit of the present invention is to be used in the cell reselecting method of communicator UE1,
Wherein, the device that communicator UE1 reception network-side ND is broadcasted is to device communication information and first row
Sequence information, and when communicator UE1 is under operational scenario, according to device to device communication information again
List the second sequence information.Similarly, the cell reselecting method of the present invention is also applicable in network-side
ND, wherein, network-side ND broadcaster is to device communication information and the first sequence information, and works as communication
Device UE1 is under operational scenario, and the device that communicator UE1 foundation receives is to device communication information
Again the second sequence information is listed.Additionally, the method and apparatus of the second sequence information rearrangement is to device
The content of communication information is correlated with.It is to say, when device communication information is relevant to multiple neighbouring little by device
When device is communicated by district or multiple frequency whether assisting system (step 302), multiple adjacent cells or multiple
In frequency, adjacent cell or the frequency of device communication are sorted in the second sequence information and are not propping up by assisting system
Adjacent cell or frequency that device is communicated by shaking apparatus were former (step 304).Further, when device is to device
Communication information is relevant to multiple adjacent cell or multiple frequency the first mould whether device is communicated by assisting system
When formula or the second pattern (step 402), according to multiple adjacent cells or multiple frequency support first mode and
Second pattern, only support the second pattern, only support the feelings that device is communicated by first mode, not assisting system
Shape, communicator UE1 rearrangement the first sequence information becomes the second sequence information (step 404).
In known technology, communicator cannot learn network-side, and whether assisting system is to device communication, very
To learning the network-side first mode whether device is communicated by assisting system or the second pattern.Further,
First community of TS 36.331 reselects the sizes values of priority parameter and network-side whether assisting system pair
Device communication, first mode or the second pattern are unrelated, and the most corresponding first community reselects priority parameter
For the highest preferential adjacent cell or frequency not necessarily assisting system to device communication.
In comparison, network-side ND of the present invention can broadcast whether assisting system to device communication, even
First mode that whether device is communicated by assisting system or the second pattern, therefore communicator UE1 can learn
The support situation that device is communicated by adjacent cell or frequency by device.Further, according to device to device communication
Support situation, communicator UE1 can include the first community and reselect the first row of priority parameter
Sequence information is adjusted to the second sequence information, and therefore adjacent cell or the frequency of device communication are had by assisting system
More preferential sequence, and the efficiency that community reselects can be improved.Accordingly, communicator UE1 foundation
Sort the most identical and perform the first community and reselect criterion or the second community reselects criterion, to choose
Select a community to carry out community and reselect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this
For the technical staff in field, the present invention can have various modifications and variations.All spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included in the protection of the present invention
Within the scope of.
Claims (18)
1. a cell reselecting method, is used in a communicator of a communication system, it is characterised in that institute
State cell reselecting method to include:
Receive the device that a network-side of described communication system broadcasted device to be communicated information and one first
Sequence information；And
When described communicator is under an operational scenario, according to described device, device communication information is arranged again
Go out one second sequence information.
2. cell reselecting method as claimed in claim 1, it is characterised in that device is led to by described device
Letter information is relevant to multiple adjacent cells of described network-side or whether multiple frequency supports a device pair
Device communicates.
3. cell reselecting method as claimed in claim 2, it is characterised in that according to described device to dress
Put communication information and again list described second sequence information, include:
Neighbouring by what the plurality of adjacent cell or the plurality of frequency supported device communicates by described device
Community or frequency sequence do not support adjacent cell that device communicates by described device or frequency with
Before.
4. cell reselecting method as claimed in claim 1, it is characterised in that device is led to by described device
Letter information is relevant to multiple adjacent cells of described network-side or whether the plurality of frequency supports described
A first mode that device is communicated by device or one second pattern.
5. cell reselecting method as claimed in claim 4, it is characterised in that according to described device to dress
Put communication information and again list described second sequence information, include:
The plurality of adjacent cell or the plurality of frequency will be supported described first mode and described second mould
The adjacent cell of formula or frequency sort in adjacent cell or the frequency of only supporting described first mode
In the past；
The plurality of adjacent cell or the plurality of frequency will only be supported the adjacent cell of described second pattern
Or frequency sorted before the adjacent cell only supporting described first mode or frequency；And
The plurality of adjacent cell or the plurality of frequency will only be supported the adjacent cell of described first mode
Or frequency sorted before not supporting the adjacent cell or frequency that device communicates by described device.
6. cell reselecting method as claimed in claim 5, it is characterised in that according to described device to dress
Put communication information and again list described second sequence information, also include the plurality of adjacent cell
Or the plurality of frequency supports described first mode and the adjacent cell of described second pattern or frequency
Sorted before the adjacent cell only supporting described second pattern or frequency.
7. cell reselecting method as claimed in claim 1, it is characterised in that described operational scenario is institute
State communicator to carry out a device at an idle mode device signal procedure or described communicator are existed
Described idle mode is intended to carry out a device and device signal procedure or described communicator is transmitted a device
To device communication instruction to described network-side, but described network-side is without responding, and makes described communicator
Leave a link pattern.
8. cell reselecting method as claimed in claim 1, it is characterised in that described community reselects
Method also includes:
According to described second sequence information, the row of picking out in the plurality of adjacent cell or the plurality of frequency
Sequence is prepreerence at least one candidate；
When according to described second sequence information the sequence of at least one candidate described in judging to be same as a service little
During the sequence in district, performing one first community and reselect criterion, wherein said first community is again
Selection criterion includes:
One first result of calculation and at least the one of described at least one candidate according to described Serving cell
Two result of calculations carry out a R criterion sequence；And
Sorting according to described R criterion, described communicator carries out community and reselects to described at least one
Sort in candidate a prepreerence candidate；And
When according to described second sequence information, the sequence of at least one candidate described in judging is different in described service
During the sequence of community, perform one second community and reselect criterion, wherein said second community weight
The newly selected criterion includes:
When the sequence of described at least one candidate has precedence over the sequence of described Serving cell, and when described extremely
At least one first measurement of a few candidate is both greater than one first base in a time interval
During quasi-value, described communicator selectivity, according to described at least one second result of calculation, enters
Row community reselects to a described at least one candidate candidate therein；And
When the sequence of described at least one candidate lags behind the sequence of described Serving cell, and when described clothes
One second measurement of business community is both less than one second reference value in described time interval
Time, and when described first measurement of described at least one candidate is in described time interval
During both greater than three reference value, described communicator selectivity is according to described at least one the
Two result of calculations, carry out community and reselect to a described at least one candidate candidate therein；
Wherein, described communicator resides in described Serving cell.
9. cell reselecting method as claimed in claim 8, it is characterised in that described time interval is the
The Treselection of third generation partnership project standard definitionRAT, described first measurement and described
Second measurement be the third generation partner program standard definition community reselect mass value or
Community receives level value again, and described first reference value is the definition of third generation partner program standard
ThreshX,HighQValue or ThreshX,HighPValue, described second reference value is third generation affiliate meter
The Thresh of the standard of drawing definitionServing,LowQValue, described 3rd reference value is third generation affiliate meter
The Thresh of the standard of drawing definitionX,LowQValue or ThreshX,LowPValue, described first result of calculation is the
The Serving cell ranking criteria value of third generation partnership project standard definition, and described second result of calculation
It it is the adjacent cell ranking criteria value of third generation partner program standard definition.
10. a cell reselecting method, is used in a network-side of a communication system, it is characterised in that described
Cell reselecting method includes:
Broadcast a device to device communication information and one first sequence information；
Wherein, when a communicator of described communication system is under an operational scenario, described communicator foundation
Device communication information is listed one second sequence information by described device again.
11. cell reselecting methods as claimed in claim 10, it is characterised in that described device is to device
Communication information is relevant to multiple adjacent cells of described network-side or whether multiple frequency supports a device
To device communication.
12. cell reselecting methods as claimed in claim 11, it is characterised in that according to described device pair
Device communication information and again list described second sequence information, include:
Neighbouring by what the plurality of adjacent cell or the plurality of frequency supported device communicates by described device
Community or frequency sequence do not support adjacent cell that device communicates by described device or frequency with
Before.
13. cell reselecting methods as claimed in claim 10, it is characterised in that described device is to device
Communication information is relevant to multiple adjacent cells of described network-side or whether the plurality of frequency supports institute
State a first mode or one second pattern that device is communicated by device.
14. cell reselecting methods as claimed in claim 13, it is characterised in that according to described device pair
Device communication information and again list described second sequence information, include:
The plurality of adjacent cell or the plurality of frequency will be supported described first mode and described second mould
Adjacent cell or the frequency of described first mode are only being supported in the adjacent cell of formula or frequency sequence
In the past；
The plurality of adjacent cell or the plurality of frequency will only be supported the adjacent cell of described second pattern
Or frequency sorted before the adjacent cell only supporting described first mode or frequency；And
The plurality of adjacent cell or the plurality of frequency will only be supported the adjacent cell of described first mode
Or frequency sequence is not before supporting the adjacent cell or frequency that device communicates by described device.
15. cell reselecting methods as claimed in claim 14, it is characterised in that according to described device pair
Device communication information and again list described second sequence information, also include the plurality of neighbouring little
District or the plurality of frequency support described first mode and the adjacent cell of described second pattern or frequency
Rate sorted before the adjacent cell only supporting described second pattern or frequency.
16. cell reselecting methods as claimed in claim 10, it is characterised in that described operational scenario is
Described communicator carries out a device to device signal procedure or described communicator at an idle mode
It is intended to carry out a device at described idle mode and device signal procedure or described communicator are transmitted a dress
Put device communication instruction to described network-side, but described network-side is without responding, and make described communication dress
Put and leave a link pattern.
17. cell reselecting methods as claimed in claim 10, it is characterised in that described community is selected again
Selection method also includes:
According to described second sequence information, the row of picking out in the plurality of adjacent cell or the plurality of frequency
Sequence is prepreerence at least one candidate；
When according to described second sequence information the sequence of at least one candidate described in judging to be same as a service little
During the sequence in district, performing one first community and reselect criterion, wherein said first community is again
Selection criterion includes:
One first result of calculation and at least the one of described at least one candidate according to described Serving cell
Two result of calculations carry out a R criterion sequence；And
Sorting according to described R criterion, described communicator carries out community and reselects to described at least one
Sort in candidate a prepreerence candidate；And
When according to described second sequence information, the sequence of at least one candidate described in judging is different in described service
During the sequence of community, perform one second community and reselect criterion, wherein said second community weight
The newly selected criterion includes:
When the sequence of described at least one candidate has precedence over the sequence of described Serving cell, and when described extremely
At least one first measurement of a few candidate is both greater than one first base in a time interval
During quasi-value, described communicator selectivity, according to described at least one second result of calculation, enters
Row community reselects to a described at least one candidate candidate therein；And
When the sequence of described at least one candidate lags behind the sequence of described Serving cell, and when described clothes
One second measurement of business community is both less than one second reference value in described time interval
Time, and when described first measurement of described at least one candidate is in described time interval
During both greater than three reference value, described communicator selectivity is according to described at least one the
Two result of calculations, carry out community and reselect to a described at least one candidate candidate therein；
Wherein, described communicator resides in described Serving cell.
18. cell reselecting methods as claimed in claim 17, it is characterised in that described time interval is
The Treselection of third generation partner program standard definitionRAT, described first measurement and institute
State the community that the second measurement is the definition of third generation partner program standard and reselect mass value
Or community receives level value again, described first reference value is the definition of third generation partner program standard
ThreshX,HighQValue or ThreshX,HighPValue, described second reference value is third generation affiliate
The Thresh of planning standard definitionServing,LowQValue, described 3rd reference value is third generation affiliate
The Thresh of planning standard definitionX,LowQValue or ThreshX,LowPValue, described first result of calculation is
The Serving cell ranking criteria value of third generation partner program standard definition, and described second calculating knot
Fruit is the adjacent cell ranking criteria value of third generation partner program standard definition.
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| US201462072435P | 2014-10-30 | 2014-10-30 | |
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| Publication number | Publication date |
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| TW201616890A (en) | 2016-05-01 |
| CN106162773B (en) | 2019-10-25 |
| TWI566612B (en) | 2017-01-11 |
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